| 摘要 |
PURPOSE:To measure non-destructively and numerically a position of a buried object by sticking a mark line to one surface of a structure, and installing a film for sensing a radiation transmitting intensity, to the other surface. CONSTITUTION:A mark line 3 whose size (l) is known is stuck to the surface of a structure 1 such as a wall whose thickness is T, etc., a film 4 for sensing a radiation transmitting intensity if installed to the other surface, and X-rays from an X-ray irradiating source 5 provided on a point of a distance FWD on a vertical line from the surface of the structure 1 in the center of the line 3 is radiated. In this state, by executing a calculation from an image of a length L corresponding to the line 3 on the film 4, an image of a length D against a buried object 2 of a diameter (d), etc., a numerical value of positions (x), (y) of the buried object 2 is measured non-destructively. |
